NOTICE ADVISORY TO NAVSTAR USERS (NANU) #095-94072 SUBJ: PRN12 SET UNUSABLE DAY 072 AT 0545 UTC. (THIS SUPERCEDES: NANU 94-94072, DTG 130344Z MAR 94.) 1. CONDITION: 12 (SVN10) WAS UNUSABLE ON DAY 072 (13 MAR 94) BEGINNING 0545 UTC UNTIL FURTHER NOTICE. 2. USERS OF GPS ARE CAUTIONED THAT THE SYSTEM IS NOT YET FULLY OPERATIONAL. 3. POC: CAPT THOMPSON AT COMMERCIAL (719) 550-6378 OR DSN: 560-6378.